Apparatus for securing binding-posts to electrodes.



J. C. GILLETTE.

APPARATUS FOR SECURING BINDING POSTS T0 ELECTRODES.

APPLICATION FILED FEB. 27. 1917- .1 ,287,669. Patented Dec. 17, 1918.

5 SHEETSSHEET I.

\ INVENTOR.

:iGILLETTE a .U/W;

A TT ORNE Y J. C. GILLETTE.

APPARATUS FOR SECURING BINDING POSTS T0 ELECTRODES. APPLICATION FILED FEB-21. 19!].

1,287,669. Patented Dec.17. 1918.

s sums-sum 2;

III. E f! z I INVENTOR.

ATTORNEY 1. c. GILLETTE.

APPARATUS FOR SECURING BINDING POSTS T0 ELECTRODES.

APPLICATION FILED FEB. 27. Hill.

1,287,669. Patented Dec.17, 191s.

5SHEETS-SHEET 3.

INVENTOR. J. C.E-ILLETTE A TTORNE Y J. C. GILLETTE.

APPARATUS FOR szcuame-amomc POSTS TO anemones.

APPLICATION FILED FEB. 27- l ll.

' Patented Dec. 17, I918.

5 SHEETS-SHEET 4.

TFQA

INVENTOR. J. C. GILLETTE BY $110k}. W

ATTORNEY J. C. GILLETIE. V APPARATUS FOR SECURING BINDING POSTS T0 ELECTRODES.

APPLICATION FILED 5.21. 1911.

1,287,669. Patented Dec. 17, 1918.

5 SHEETS-SHEET 5 INVEN TOR.

BY J. DILLEITE I Mann 9.

A TTORNEY JOHN C. GILLETTE, 01 LAKEWOOD, OHIO NATIONAL CARBON COMPANY,

ASSIGNOR, BY MESNE ASSIGNMENTS, TO INC., A CORPORATION OF NEW YORK.

- APPARATUS FOR SECURING BINDING-POSTS TO ELECTRODES.

Specification of Letters Patent.

Patented Dec. 17, 1918.

Application filed February 27, 1917. Serial No, 151,382.

shaft 5 of drive pulley 6. A chuck 7 for drill 8 will be fitted on the end of shaft 5.

I To all whom it may concern Be it known that I, JOHN C. Gmnr'm, a citizen of the United States, residing at Lakewood, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Apparatus for Securing Binding-Posts to Electrodes, of which the following is a full, clear, and exact description.

This invention relates to apparatus for securing to carbon electrodes, binding posts of the type" described in the Henn Patent 813,093. I

The usual method of inserting these posts or dowels requires two operators, one for drilling the electrodes and a second for pressing the dowels in the hole made therein.

The chief object of the invention is to provide apparatus controlled b1 operator for performing both t and inserting operations.

Other objects of the invention will appear in the following description.

In the accompanying drawings illustrating one embodiment of my invention Figure 1 is a front viewof the apparatus.

Fig. 2 is a plan view.

Fig. 3 is a rear view.

Fig. 4 is a cross sect-ion on the line AA of Fig. 1 looking in the direction of the arrows. 1

Fig. 5 is a cross section on the line B B of Fig. 1 looking in the direction of the arrows.

Fig. 6 is an end view of an electrode holder with a carbon fitted therein.

Fig. 7 is a cross of Fig. 6. v

Fig. 8 is a section with parts broken away illustrating the dowel feed hopper and inclined chute. v

Fig. 9 is a detached section showing the dowel release.

Fig. 10 is a view of the parts shown in Fig. 9 taken in thedirection of the arrow.

Fig. 11 is a cross sectional view of a portion of the dowel feed slide. v

Fig. 12is an enlarged front view of the head stock end of the apparatus.

As shown in Figs. 1 and 4, the supporting framework consists of a bed 1 having a plurality of legs 2.- The bed is provi ed with two projecting guides 3 running lengthwise thereof. Two bearings 4 are attached e drilling to one end of the bed and serve tocarry the a single I section on the line CC Projection 9 attached to the bed near the drill chuck serves to support a horizontal flat spring strip 10. The free end 11 which is offset from the body portion 10'by means of a curved surface 12 is provided with a pro ecting pin 13 for a purpose to be referred to farther on.

A carriage 14 having grooves fitting on the guides 3 is adapted to slide on the bed 1. A counterweight 15 attached to a cable 16 passing over pulley 17 exerts a force tending to draw the carriage 14 toward the drill 8.- A second cable 18 fastened to the base 14 runs over a pulley 19 and is attached to a pivoted foot lever 20.

The carriage is also connected to a pivoted lever 21 which is connected bv means of the rod 22 with a piston 23 movable in cylinder 24. The cylinder has an inlet 25 connected by a pipe (not shown) with a port 26 of a control valve 27 and an exhaust 28 connected to the port 29 ofthe control valve. The control valve is provided with an exhaust port 30 and an inlet port 31 connected to' compressed air (not shown).

The end of the carriage adjacent the drill will he' provided with an upright abutment 32 having an opening 33 adapted to permit the drill 8 to pass therethrou'gh. A slot 34 in carriage 14 is adapted to receive the base 35 of a turret 36 rotatable on a vertical shaft 37. A lever 38 having a controlling handle 39 fitted to the shaft, engages the springlO and coiiperates with the curved portion 12 of the spring to rotate the turret. The turret attachment is practically the same as the attachment used in connection with an ordinary lathe and the internal construction for any source of pressure such as a tank of indexing the body portion 26 will not be de-- scribed herein as such arrangements for in dexing are old and well known.

Six holders, such as s'hownin Figs. 6 and 7, are carried by the turret bod at points 60 a art, as indicated at A, B, 8 D, E and F of ig. 2. Each holder consists of a member 41 fitted into a projection 42 of the turret. A clamping arm 43 pivoted in a slot 44 in the projection, rests on the carbon electrode 45 when it is placed in the member 41 which may be channel-shaped or any other shape adapted to receive the electrode. At two points of the arm 43, clips 46 are attached having depending ends fitted over the carbon retaining member 41. The clamping member 43 will be pressed against the electrode by means of springs 47, 47 arranged on each side of the electrode support. Each spring is attached at one end to a pro ection '48 of the support 41 and at the other end .to a cross bar 49 resting on the clamping arm. A sloping lug 50 projecting from member 41 is provided for a purpose to be referred to later.

The dowel feeding'device is supported from the frame by brackets 51 and comprises a box-like receptacle 52 having grooves. 53 at opposite sides serving as guides for a reciprocating slide 54. The lower end of the slide is connected to a reciprocating arm 55 by means of a pin 56 fitted in slot 57. The upper movement of the slide is limited by the stops 58. An inclined slot 59 is cut in the center of the slide to catch the dowels therein. When at the upper end of the stroke, the slot of the slide coincides with a slot 60of the box 52 and is in alinement because the portion of the dowel that fits in the carbon is longer than the threaded portion which is able to pass under the pin. The mechanism for releasing one dowel at a time is attached to one side of the slotted guide 61 and consists of a block 63 (Fig. 9) bolted thereto having an edge projecting over the guide. Two blades 64, 65 pass through openings which are directly over the slot of the guide 61 and are spaced apart a distance equal to or less than the distance between adjacent dowels. The blades are connected to reciprocating rods 66, 67

(Figs. 9 and 10) having their lower ends pivotally fastened to opposite arms '68, 69

of a T shaped member 70. The T 70 is pivoted at 71 to the inclined guide and has a flexible strip 72 attached to the lower end. The strip has a counterweight lug 73 at the free end which is engaged by a pin 74 pro jecting from the arm 55 which operates the dowel feed slide.

The flange of the dowels slides on theupper edge of the guides in the upper part,

but as shown in Fig. 11, a slot7 5 on the inner surface of each side of the slot of guideway 61, is adapted to receive the flanged head as the dowel approaches the vertical portion 76 of the guide. The lower end of the guide fits between a pair of arms 77 (Fig. 4) pivoted on a bolt 78'. The adj acent faces of the arms, when in a closed position as shown, form a passage 78 similar in section to that of the lower part 76 of guideway 61 which connects therewith. The combined passage serves for leading the dowels 65 to a position in which they are in alinement arms. A wedge 82 movable in a space 83 between the arms, serves to spread these apart. The wedge is mounted on the end of a pivoted lever 84 having an upstanding lug 85 adapted to be engaged by the lug 50 on the bottom of the electrode support to force the wedge 82 downward.

The supporting framework for arms 77 and the wedge consists of a block 86 (Fig. 1) having two rods 87 (Fig. 5) extendin to the back 88 of a head stock'89 mounte on the frame. The block 86 may be moved under the action of springs 90 which are placed around rods 87 between the block and the head stock. Bolt 78 serving as pivot for arms 77, also connects these to the block 86. The pivoted lever 84 is mounted between lugs 91 of a frame 92 that is connected to block 86 by bars 93. At the lower end of frame 92 rollers 94 are attached which move on the bed 1. Stops 95 limit the movement of the-upper end of arms 77 so that the slots of the guide and the arms come into alinement.

The dowel retaining arms 77 and connected parts are adapted to be moved back and forth to insert the threaded end of the dowel in an opening 96 of a plunger 97 slidable in the head stock 89. This movement is produced by means of a linkwork consisting of a strip 98 attached to block 86 and passing through the back 88, and connected to an arm 99 keyed on a shaft 100. A second link 101 fastened on axis is pivotally joined to link 102. An operating lever 103 is pivotally connected at an intermediate point 104 to a lug 103. Link 102 is connected at one end to the lever 103 and the other end of this lever is adapted to engage a cam slot 104' of the carriage 14.

The head stock plunger 97 is movable against an arm 105 pivoted at 106. Move ment of the plunger is opposed by a compression spring 107 fitting around a rod 108 projecting from a supporting lug 109 of the head stock. The end 110 of lever 105 slides in a yoke 111 attached to lug 109 and when plunger 99 is moved a suflicient distance the end 110 engages a contact point 112 insulated from the yoke 111.

One terminal of-an electric circuit is connected to the contact 112 and the other is connected to a lamp 113 which is electrically connected with the bed 1.

Thedowel feed lever 55 is pivoted at 114 and connected to an upstanding arm 115 of a rod 116.' This rod passes through a lug 117 on the base 14 and has a spring 120 stop 121 and a. 'aecondxsp meaeeif the left in Fig. 2. The operation is then as .15. The carbon will be follows:-

The hop r 52 is kept supplied with dowels by plzcing a number of them therein from time to time. The drill 8 is maintained in continual rotation unless it is de-..

sired to shut down the apparatus.

The operator removes the doweled electrode from position A and inserts a fresh one as the carriage travels backward toward the left under the influence of counterweight shed lmder the arm \43 and pressed badlr until it abuts against the projection 42 where springs 47 hold it quite rigidly, The-electrode in sition C is. forced against drill 8 to drill the hole therein until the cross piece abuts against the drill chuck. The operator then pushes downward on lever 20 and pulls the carriage to the right until the drilled electrode in position- F is forced against the dowel in foot pressure to force the dowel into the electrode; the operator preferably operates air valve'27 and admits pressure into cylinder 24 to. complete the movement of the carriage to the right. During the return movement to the right as just described, arm 38 slides along on the spring cam 10 until it viding that the relation between the size of engagesithe pin 13. Further movement of the turret therefore rotates the arm 38 in a colmter clockwise direction, but this produces no movement of the turret on account of the chuck indexing arrangement not shown.

When the electrode is forced against the dowel the reaction through the plunger 27 Wlll compress spring 108 and force back lever 110 until contact is made at 112, prothe dowel and the size of\ the hole in the electrode is sufficient to make a tiiglht con;

nection. The electric lamp 113 w therefore light Yip and the operator will know that the dowel has been properly inserted. release pressure on lever 21 at this pofiit and permit the counterweight to draw the carriage again to the left in Fig. 2.

If lamp 113 did not light up during the doweling operation, this would indicate that the dowel was forcedfr'into the electrode against insuflicient resistahce or else spring 107 would have been compressed sufliciently holder 77. Instead of relying on' to make contact at 112. In case the lamp does-not light up as just described, the operatorwill discard the electrode as having imperfect connection.

At the beginning of the movement of the turret toward the drill, the end of lever 38 is caught'in the curved part 12 of the spring 10 and the arm and turret are moved through 60, in a clockwise direct1on by mdexing mechanism within theturret to the a are thus moved toward the drill whereby the end of pivoted lever 55 is raised. A dowel will be released and will be held in position in arms 77 to enter the carbon when the pin 74 raises the arm. 55 and'the strip 64 enters the space between dowels .before the front strip releases them, and holds back all 'but the front dowel which 'occupies a position between the blades. The dowel slides down the inclined guideway 61 and before reaching the vertical part 76 the head 124 enters the groove 75 andthen continues downward, passing into the space ,7 8 between the arms 77. The head is retained in the groove 79 and when the dowel reaches the bottom of the space 78 between. the arms 77 one end 122 is in alinement with the carbon, and the screw threaded end 123'is adjacent hole 96 in the plunger 97. Movement of lever 55 also raises slide 54 which passes through the dowels in the box 53 and some of these will be caught in slot 59. Upon reaching the slot of theguideway 61 the dowels will slide'down the inclined surface as far as the reciprocating blade 64. Any dowels delivered to the slide 61 with the long portion 124 up, will be knocked out of the-slide into the receptacle 62 or will be rere. The operator then removes front .strip 65 sufiiciently to release the dowels. The rear versed by the pin 63. The dowels will then shde down the incline until the lowest one reaches the blade 64 which is moved in the position shownin Fig. 9 during the drilling;

retaining arms 77 will be moved by means of arm' 98- toward the plunger 97 so that the threaded pin 123 enters the hole 96. ,Tll arm 98 is moved backward 'when the inclined surface 104 of theturret base 14 strikes the end of lever 102. The opera- -tor will maintain the foot pressure until the tip of the dowel enters thev carbon.-

Atpractically th'esame time that the dowel enters the carbon the arms 77 are'sp'read apart so. that the dowel is Supported by plunger 97; and the carbon. This is done by cam 50 which engages projection 85 to move the wedge 82 down between the arms.

- When the hole of the electrode in position F reaches the tip of the dowel, the, operator will apply air pressure to piston 23 to'foroe the dowel the rest-of the way into the carbon. The air pressure will not be applied unless the dowel is properly alined with the carbon. A

Although the. apparatus has i been described as consisting of manual and pneumatic means for forcing the dowels in the carbons, it will be evident that either could ,be used alone, although the combination'is preferable, because it is difficult to have the dowels and drill holes accurately alined'in every case.

This is essentialbecause-if air pressure only'is used the carbon willbe'split if the dowel does not enter the drilled hole.

Having decribed my im ention, what I claim is 1. In-apparatus for inserting a dowel ter minal in an electrode, a holder for the electrode, a rotating drill adapted to engage said electrode'to-form a borefa holder for a dowel and means for placing said elec-' trode successively adjacent said drill and dowel holder.

I 2. .In apparatus for-inserting dowel terminals inelectrodes, a plurality ofholders.

. for'electrod'es, adrill adapted to successively engage the electrodes, a holder for a dowel andme'ans for moving said electrodes successively adj'acent the dowel holder.

3. .In apparatusfor inserting dowel terminals in electrodes, a rotatable support having a plurality 'of electrode holders-a drill adapted to successively engage the electrodes, a'holder fer a. dowel, means for feeding a dowel thereto and meansiformoving said electrodes successively adjacent the ,fioing -said drill and said dowel holder in, en-.

gagement with each electrode holder.v

In apparatus for inserting dowel terminals in electrodes, a supporting. frame, a

base slidably mounted thereon having a plurality of holders adapted to retain an elecrality of holders projecting therefrom rality of] holders adapted to retain an electrode, a rotating I drill, a dowel holder, a member having-an 115' -whereby the dowel enters said opening,

time i trade, a rotating drill, a dowel holder mounted on the frame, means for feeding a dowel to the holder and means for moving the base into engagement with the drill or dowel holder. v

'6. In apparatus for inserting dowel terminals in electrodes, a supporting frame, abase slidably mounted thereon, a rotatable turret mounted on said base having a plurality of holders projecting therefrom 5 adapted to retain an electrode, a rotating drill attached to the frame, a dowel holder, means for feeding a dowel to the holder and means for moving said turret alternately into engagement withsaid drill and dowel holder. g

7. In apparatus forinserting dowel terminals inelectrodes, a supporting frame, a base slidably mounted thereon, a rotatableturret mounted on said base having a plurality of holders projecting therefrom adapted to retain an electrode, a rotating drill attached to the frame, a dowel holder, a hopper-containing aplurality of dowels, a reciprocating slide for removing dowels. from the hopper, a guideway for conveying dowels from the slide to said holder and means for moving said turret alternately -into engagement withthe drill and dowel p 8. In apparatus forinserting dowel terminals in electrodes, a supporting frame, a base slidably mounted thereon, a rotatable turret mounted on said-base having a pluadapted to. retain an electrode, a. rotating drill, a dowel holder, a member having an opening adapted to receive one end of a dowel, means for moving the dowel holder whereby the dowel enters said opening,

means for moving the turret toward the dowel holder andmeans for releasing the dowel when it enters the electrode. I '9. In apparatus for inserting dowel terminals in electrodes, a supporting frame,'a

base slidablymounted thereon, a rotatable turrent mounted on said base having a luprojecting there rom" opening adapted'to receive. one end of a dowel, meansfor moving thev dowel holder means for moving the turret toward the dowel holder, means for releasing the dowel when it enters the electrode andmeans for yieldingly resisting movement of the turret toward the dowel holder.-

10. In apparatus for-insertingdowel-terminals in electrodes, a supporting frame,

a slidably mounted thereon, a rotatable I turret mounted ona base having a plurality of holders projecting therefrom adapted to retain an electrode,a rotating drill,'a--dowel holder, a member having anopening adapted 13b 4 to receive one end of a dowel, means for moving the dowel holder whereby the dowel enters said opening, means for moving the turret toward the dowel holder, means for releasing the dowel when it enters the electrode, means for yieldingly resisting movement of the turret toward the dowel holder and means operated by said yieldingly resisting means adapted to indicate the movement of said last mentioned means.

11. In apparatus for inserting dowel terminals in electrodes, asupporting frame, a base slidably mounted thereon, a rotatable turret mounted on a base having a plurality of holders projecting therefrom adapted to retain an'electrode, a rotating drill, a dowel holder, a member having an opening adapted to receive one end of a dowel, means for moving the dowel holder whereby the dowel enters said opening, means for moving the turret toward the dowel holder, means for releasing the dowel when it'enters the electrode, means for yieldingly resisting movement of the turret toward the dowel holder, means operated by said yieldingly resisting means adapted to indicate the movement of said last mentioned means, an electric circuit and an arm operated by said yieldingly resisting means to close the electric circuit.

12. In apparatus for inserting dowel terminals in electrodes, a hopper for the dowels, a slide reciprocating therein adapted to engage the dowels, a conveyer for receiving the dowels therefrom, a holder for a dowel, a holder for an electrode, means for moving the holder toward the dowel and means for yieldingly resisting said movement.

13. In apparatus for inserting dowel terminals in electrodes, a holder for retaining a dowel, means for feeding dowels singly thereto, a holder for an electrode, means for moving the holder toward the dowel and means for yieldingly resisting said movement.

14. In apparatus for dowel terminals in electrodes, a hopper for the dowels,

said holder, a holder for an electrode, means a "for moving the holder toward the dowel,

means for yieldingly resisting said movement and means for releasing the dowel from the holder when it is engaged by said yielding resisting means and said electrode.

15. In apparatus for inserting dowel terminals in electrodes, a hopper for the dowels, a slide reciprocating therein adapted to engage the dowels, a conveyer for receiving the dowels therefrom, a holder for a dowel, means for releasing dowels one at a time to said holder, a holder for an electrode, means for moving the electrode holder toward the dowel holder, means for yieldingly resisting said movement, means for moving said dowel holder toward the yielding resisting means whereby it is fitted therein, and means for releasing the dowel from the holder when it is engaged by said yielding resisting means and said electrode.

16. In apparatus for inserting dowel terminals in electrodes, a hopper for the dowels, a slide reciprocating therein adapted to .engage the dowels therefrom, a holder for a dowel, means for releasing dowels one at a time to said holder, a holder for an-electrode, means for moving the electrode holder to- 'ward the dowel holder, means for yieldingly signature.

J. C. GILLETTE. 

